We'll use phones, not cash, to pay by 2020: Pew

Take a look at the green stuff in your wallet (if you have any) and prepare to say goodbye to it in the future: By 2020, most Americans will be using their cellphones, not cash or credit cards, to make payments, says a new report.

— Take a look at the green stuff in your wallet (if you have any) and prepare to say goodbye to it in the future: By 2020, most Americans will be using their cellphones, not cash or credit cards, to make payments, says a new report.